104 
is consequently in early spring, while the fruit is developing and 
ripening, that plant-lice are most likely to injure the strawberry in 
a way to call for artificial interference. 
REMEDIES. 
The standard remedies for the devastations of plant-lice are pyre- 
thrum and the kerosene emulsion, the first of which may be applied 
at any time, and the second whenever the plants are not bearing 
ripening fruit. If the plant-lice should occur on the leaves in con- 
siderable numbers after the fruit is picked, it would doubtless be 
easy to control them by mowing and burning the field as for the 
leaf-roller. 
In case the Aphis which I have described should be found upon 
the crowns in fall, it would be decidedly imprudent to use plants 
from this field for setting new fields the following spring, as many 
of the crowns would be almost certain to contain the eggs. I think 
that it is entirely probable, however, that such plants could be freed 
from either the eggs or the lice by dipping them in water upon 
which was a thin film of kerosene, care being taken, of course, that 
kerosene enough was not used to injure the plants. 
THe FausrE Cuincu-Bua. 
(Nysius angustatus, Uhler,=N. destructor, Riley.) 
Order Hemiptera. Family Lyeaipa. 
{Plate X, Fig. 5.) 
This insect is one of the many causes of the circular rusty spots 
with which the leaves of strawberries become discolored during the 
summer, and it occasionally becomes abundant enough to do con- 
siderable mischief. It is commonest in autumn, in fields which are 
overgrown with purslane, upon which it seems to feed by preference ; 
but of course, under these circumstances, it is little injurious to the 
strawberry. I have found it especially abundant in strawberry fields 
at Centralia; and it is probable that the following item from the 
Western Rural for 1870, by a fruit grower of Centralia, refers to 
this: species : : 
“A new insect, to us here, has appeared on our s'rawberries for 
the first time the past season, damaging the crop very much. It 
resembles somewhat the chinch-bug, so destructive to our wheat and 
corn, and judging from the peculiar odor they emit on being mashed, 
I should think them very nearly related. Some claim that they are 
of a different species altogether. Whether this be so or not, those 
interested in the cultivation of the strawberry are anxiously looking 
. forward to another season to see if they are to continue their 
depredations.” 
It has also been known to injure seriously the foliage of young 
grapes, of potatoes, turnips, beets, cabbages, etc. The number of 
broods maturing is not known. In November, the adults, mingled 
with a few pupe, may be found abundant among hibernating insects, 
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